1991 AF/2HD and AF/4HD active filters - owner's manuals

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The following documents contain installation and operation for the following products:

The Rockford Fosgate AF/2HD is an active electronic crossoverthat incorporates HD (Hybrid Design) to provide state-of-the-art flexibility, performance and pleasing aesthetics. Its features include: two stereo inputs for true fading capability, infinitely adjustable frequency modules, user definable highpass or low-pass filters, channel summing for mono applications, fully isolated high voltage power supply, low noise circuitry, low distortion, high-load driving capacity 750 mV RMS input level, 750 mV RMS output level.

The Rockford Fosgate AF/4HD is an active electronic crossover that incorporates HD (Hybrid Design) to provide state-of-the-art flexibility, performance and pleasing aesthetics. Its features include: four stereo inputs with true fading capability, infinitely adjustable frequency modules, four user definable high pass, low pass and band pass filters, single channel summing for mono applications, fully isolated high voltage power supply, low noise circuitry, low distortion, high load driving capacity 750 mV RMS input level, 750 mV RMS output level.

• AF/2HD - Active Filter 2-Channel Adjustable Crossover [Owner's Manual]
• AF/4HD - Active Filter 2-Channel Adjustable Crossover [Owner's Manual]